with that breaking news, what could be a pretty serious escalation in tensions between the u.s. and iran. >> it centers, this morning, a report, that the iranians have captured an unmanned american drone. for the very latest, we're joined from london by abc's nick schifrin. good morning, nick. >> reporter: good morning, rob. good morning, paula. we have no comment on this from the u.s. but the iranians claim they brought down what's known as a scan eagle drone, after it violated iranian air space. it's right now in an iranian studio. it's a small surveillance drone. u.s. navy captains used them to watch their own ships. this is not an armed drone. if the iranians brought it down, the u.s. will see that as a very aggressive action. last month, the iranians tried to shoot down a u.s. drone in the same place. almost exactly a year ago, the iranians brought down a high-tech drone, one used by the cia. that was inside iranian territory. as you said, this will raise tensions in a very sensitive area. u.s. has thousands of service members in the gulf, just a few miles from iran. and the u.s. co
